Specifications

System Macros Invoked by Drivers
RELALT
RELALT
Releases a set of Q22–bus alternate map registers allocated to the driver.
Format
RELALT
Description
The RELALT macro calls IOC$RELALTMAP to release a set of Q22–bus alternate
map registers (registers 496 to 8191) allocated to the driver. When the RELALT
macro is invoked, R5 must contain the address of the UCB. RELALT destroys the
contents of R0 through R2.
2–53